When my daughter named him that was the question I asked - but it turns out that Tristan is a football player with Deportivo the La Coruna team.
But if we get a girl for him then she has to be Isolde.
The legend of Tristan and Isolde (Tristram and Iseult) takes place during the Middle Ages, when knighthood and the chivalric code prevailed. On board ship from Ireland to Cornwall, a sailor's voice resounds from the rigging. His song about an Irish girl annoys the fiery Isolde, who is being taken by Tristan as bride for his uncle, King Marke. Isolde wishes the ship would sink rather than take her to her hated destination. Her companion, Brangäne, tries in vain to calm her. Instead Isolde is enraged by the knight Tristan, whom she sees standing on the afterdeck, avoiding her: by delivering her to his uncle, he shows no regard for her feelings. She sends Brangäne to summon Tristan, who sends back courtly, evasive replies.
This is for the benefit of we culturally challenged types. Reminds me of RunningBear, who loved LittleWhiteDove, with a love that would never die.... ;-)